Based on the user reviews on the app, here are three pros and three cons, each with a 15-word limit: Pros: 1. **Accurate transposition**: Users praise Mutone's ability to accurately transpose sheet music to different keys and instruments. 2. **User-friendly interface**: Many appreciate the app's intuitive design, making it easy to navigate and use. 3. **Convenience**: Users love the app's portability and ability to access their music library anywhere, anytime. Cons: 1. **Limited song selection**: Some users are disappointed by the app's limited song library, with no option to add custom songs. 2. **Technical issues**: A few users experience technical problems, such as crashes and glitches, which can be frustrating. 3. **No audio export**: Some users wish to be able to export sheet music as audio files, which is currently not available. Please note that these are general conclusions based on the user reviews at the time of my knowledge cutoff. Opinions may vary, and new reviews may provide different insights.